1.a disposition to find (or make) causes for amusement"her playfulness surprised me" "he was fun to be with"
2.shrewdness as demonstrated by being skilled in deception
3.the location of a visual perception along a continuum from black to white
4.the quality of being luminous; emitting or reflecting light"its luminosity is measured relative to that of our sun"
5.intelligence as manifested in being quick and witty
BrightnessBright"ness, n. [AS. beorhines. See Bright.]
1. The quality or state of being bright; splendor; luster; brilliancy; clearness.
A sudden brightness in his face appear. Crabbe.
2. Acuteness (of the faculties); sharpness 9wit.
The brightness of his parts . . . distinguished him. Prior.
Syn. -- Splendor; luster; radiance; resplendence; brilliancy; effulgence; glory; clearness.
definition of Wikipedia
artfulness, astuteness, brains, brightness level, brilliance, brilliancy, cheerfulness, clarity, cleverness, conviviality, craft, craftiness, cunning, effulgence, elation, exhilaration, foxiness, fun, gaiety, geniality, gladness, glare, gleam, glee, glitter, glory, good spirits, guile, high spirits, illumination, jollity, joviality, joy, light, lightheartedness, loudness, luminance, luminosity, luminousness, merriment, merry-making, mirth, optimism, playfulness, radiance, revelry, sharpness, shrewdness, slickness, slyness, smartness, sportiveness, strength, wiliness, wit, good humor (American), good humour (British)
↘ alive, animated, artful, buoyant, cheerful, cheery, convivial, cordial, cunning, genial, gleeful, good-time, hearty, in good spirits, in high spirits, jovial, live, lively, living, sly, tricky, warm, wily ↗ brainy, bright, brilliant, clever, fine, glittering, illuminated, luminous, nice, smart as a whip ≠ dullness
Apparent Visual Brightness • Brightness Falls • Brightness Reef • Brightness temperature • Buddha of Brightness • Gardens of Perfect Brightness • Intrinsic brightness • Low surface brightness galaxies • Low surface brightness galaxy • Royal Buddha of Brightness • Sky brightness • Surface brightness • Surface brightness fluctuation • The Brightness • Tolman surface brightness test
qualité du caractère (fr)[Classe...]
(dining room; dining-room)[Thème]
frivolous - gaiety, playfulness - playfully - graveness, gravity, soberness, sobriety, somberness, sombreness - brightness, cheerfulness, conviviality, fun, good humor, good humour, good spirits, high spirits, lightheartedness, playfulness, sportiveness[Dérivé]
(dining room; dining-room)[termes liés]
habileté d'esprit (fr)[Classe]
illume, illuminate, illumine, light, light up - light - black, dark - brightness - bright, brightly, brilliantly - dull - dismal, dull, gloomy, leaden, miserable, sulky - brightness, brightness level, light, luminance, luminosity, luminousness[Dérivé]
habitude; condition; fettle[Classe...]
light, visible light, visible radiation[Rel.Cont.]
light, light source - light, lightness - brightness, brightness level, light, luminance, luminosity, luminousness - illuminance, illumination - light - illumination - light, lighting - illuminant - brightness - bright, brightly, brilliantly - dullness - dully[Dérivé]
caractère, état, propriété (fr)[Classe...]
Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light. In other words, brightness is the perception elicited by the luminance of a visual target. This is a subjective attribute/property of an object being observed.
The adjective bright derives from an Old English beorht with the same meaning via metathesis giving Middle English briht. The word is from a Common Germanic *berhtaz, ultimately from a PIE root with a closely related meaning, *bhereg- "white, bright".
"Brightness" was formerly used as a synonym for the photometric term luminance and (incorrectly) for the radiometric term radiance. As defined by the US Federal Glossary of Telecommunication Terms (FS-1037C), "brightness" should now be used only for non-quantitative references to physiological sensations and perceptions of light.
A given target luminance can elicit different perceptions of brightness in different contexts; see, for example, White's illusion.
In the RGB color space, brightness can be thought of as the arithmetic mean μ of the red, green, and blue color coordinates (although some of the three components make the light seem brighter than others, which, again, may be compensated by some display systems automatically):
The term "brightness" is also used in discussions of sound timbres, in a rough analogy with visual brightness. Timbre researchers consider brightness to be one of the perceptually strongest distinctions between sounds, and formalize it acoustically as an indication of the amount of high-frequency content in a sound, using a measure such as the spectral centroid.
|Look up brightness in Wiktionary, the free dictionary.|
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